up
previous
next
Submat
Syntax
Submat(M:LIST or MAT,R:LIST of INT,C:LIST of INT):MAT
Summary
submatrix
Description
This function returns the submatrix of M formed by the rows listed
in R and the columns listed in C. If M is a list, it is interpreted
as a matrix in the natural way.
example
M := Mat([[1,2,3,4,5],[6,7,8,9,10],[11,12,13,14,15]]);
Submat(M,[1,3],3..5);
Mat[
[3, 4, 5],
[13, 14, 15]
]
-------------------------------
L := [[1,2,3],[4,5,6]];
Submat(L,[2],[1,3]);
Mat[
[4, 6]
]
-------------------------------
See Also